PISTON KIT 12-13 YZ250F 77.00, WISECO 40072M07700

Part No. 56-W108+000.WI (oro2u.com)
Yamaha YZF250 YZ250F 2012-2013,
Wiseco 40072M07700 Piston Kit Bore 77.00mm. STD Compression 13.5:1
Extreme racing conditions demand the strength and toughness that only forged pistons can offer. Compared to cast

pistons, forgings are tougher and more durable, and will stand up to the abuse that high performance motorsport applications require. Most castings are brittle, have no grain structure and tend to fail catastrophically when the material yield strength is exceeded. Forgings have condensed grain that is aligned to the features of the part, which produces higher mechanical properties, and resistance to impact and fatigue. Each forging is designed to optimize the strength-to-we 56-W108.00A.PX” – ProX pistons are precision machined on the latest, state of the art CNC equipment and use the same low-expansion, low-friction piston alloy all major Japanese engine manufacturers use. – Uses an OEM style tin coating to assist the break-in process when you first start your machine.
Replacements parts. PROX RING SET 02.2402,